Quarterly Results (Unaudited) - Quarterly Financial Data (Detail) $ / shares in Units, shares in Thousands, $ in Thousands, CAD in Millions	1 Months Ended		3 Months Ended								12 Months Ended
	Dec. 31, 2017 USD ($) Hotel	May 31, 2016 USD ($)	Dec. 31, 2017 USD ($) Hotel $ / shares shares	Sep. 30, 2017 USD ($) $ / shares	Jun. 30, 2017 USD ($) Hotel $ / shares	Mar. 31, 2017 USD ($) $ / shares shares	Dec. 31, 2016 USD ($) $ / shares	Sep. 30, 2016 USD ($) $ / shares	Jun. 30, 2016 USD ($) $ / shares	Mar. 31, 2016 USD ($) $ / shares shares	Dec. 31, 2017 CAD Hotel shares	Dec. 31, 2017 USD ($) Hotel $ / shares shares	Dec. 31, 2016 USD ($) $ / shares shares	Dec. 31, 2015 USD ($) Hotel $ / shares shares
Quarterly Results Of Operations [Line Items]
Total revenues			$ 302,505	$ 350,866	$ 338,363	$ 290,991	$ 295,725	$ 354,521	$ 332,789	$ 287,558		$ 1,282,725	$ 1,270,593	$ 1,284,753
Income from operations			91,784	117,918	98,442	52,931	70,856	121,340	104,712	63,756		361,075	360,664	500,072
NET INCOME			40,150	66,250	49,725	16,063	30,148	57,065	61,386	14,753		172,188	163,352	283,022
Net (income) loss attributable to noncontrolling interests			(90,055)	(12,374)	2,050	7,038	(84,547)	(10,509)	(657)	2,293		(93,341)	(93,420)	(169,982)
NET INCOME ATTRIBUTABLE TO EXTENDED STAY AMERICA, INC. COMMON SHAREHOLDERS			$ (49,905)	$ 53,876	$ 51,775	$ 23,101	$ (54,399)	$ 46,556	$ 60,729	$ 17,046		$ 78,847	$ 69,932	$ 113,040
Net income (loss) per common share-basic (in dollars per share) | $ / shares			$ (0.26)	$ 0.28	$ 0.27	$ 0.12	$ (0.28)	$ 0.23	$ 0.30	$ 0.08		$ 0.41	$ 0.35	$ 0.55
Net income (loss) per common share-diluted (in dollars per share) | $ / shares			$ (0.26)	$ 0.28	$ 0.27	$ 0.12	$ (0.28)	$ 0.23	$ 0.30	$ 0.08		$ 0.41	$ 0.35	$ 0.55
Gain (loss) on sale of hotel properties												$ 9,973	$ 0	$ 130,894
Anti-dilutive securities (in shares) | shares			500
Disposed of by Sale [Member]
Quarterly Results Of Operations [Line Items]
Total revenues												$ 5,295	14,925	83,546
Gain (loss) on sale of hotel properties	$ 11,900	$ (1,900)									CAD (1.9)			$ 130,900
Number of hotel properties held for sale | Hotel	1		1		4						1	1		53
ESH REIT [Member]
Quarterly Results Of Operations [Line Items]
Rental revenues from Extended Stay America, Inc.			$ 308,210	$ 143,407	$ 115,589	$ 116,294	$ 308,402	$ 153,139	$ 116,492	$ 116,242		$ 683,500	694,275	$ 719,635
Income from operations			241,320	60,589	28,946	16,054	228,563	72,760	36,336	36,797		346,909	374,456	524,209
NET INCOME			$ 207,338	$ 28,486	$ (4,724)	$ (16,116)	$ 192,214	$ 23,652	$ 1,471	$ (5,130)		214,984	212,207	378,184
NET INCOME ATTRIBUTABLE TO EXTENDED STAY AMERICA, INC. COMMON SHAREHOLDERS												214,968	212,191	378,168
Gain (loss) on sale of hotel properties												$ 8,562	0	116,616
Anti-dilutive securities (in shares) | shares						300				100
ESH REIT [Member] | Disposed of by Sale [Member]
Quarterly Results Of Operations [Line Items]
Gain (loss) on sale of hotel properties	$ 11,900	$ (3,300)												$ 116,600
Number of hotel properties held for sale | Hotel	1		1		4						1	1		53
ESH REIT [Member] | Common Class A [Member]
Quarterly Results Of Operations [Line Items]
NET INCOME ATTRIBUTABLE TO EXTENDED STAY AMERICA, INC. COMMON SHAREHOLDERS												$ 121,627	$ 118,787	$ 208,202
Net income (loss) per common share-basic (in dollars per share) | $ / shares			$ 0.47	$ 0.06	$ (0.01)	$ (0.04)	$ 0.43	$ 0.05	$ 0.00	$ (0.01)		$ 0.49	$ 0.47	$ 0.83
Net income (loss) per common share-diluted (in dollars per share) | $ / shares			0.47	0.06	(0.01)	(0.04)	0.43	0.05	0.00	(0.01)		$ 0.48	$ 0.47	$ 0.83
ESH REIT [Member] | Common Class B [Member]
Quarterly Results Of Operations [Line Items]
NET INCOME ATTRIBUTABLE TO EXTENDED STAY AMERICA, INC. COMMON SHAREHOLDERS												$ 93,341	$ 93,404	$ 169,966
Net income (loss) per common share-basic (in dollars per share) | $ / shares			0.47	0.06	(0.01)	(0.04)	0.43	0.05	0.00	(0.01)		$ 0.48	$ 0.47	$ 0.83
Net income (loss) per common share-diluted (in dollars per share) | $ / shares			$ 0.47	$ 0.06	$ (0.01)	$ (0.04)	$ 0.43	$ 0.05	$ 0.00	$ (0.01)		$ 0.48	$ 0.47	$ 0.83
Anti-dilutive securities (in shares) | shares											569	569	0	0